About adding yaw stability to a single part aircraft

[flywlyx]

I am making a single part aircraft add-on and find it is quite hard to add yaw stability to it.

What I want to do is adding a force(torque) depends the deviation angle(velocity) between aircraft direction and surface velocity.

But I find it is a little tricky to use part.TransformDirection to figure out the deviation angle(velocity) and how to use Rigidbody.AddForce/torque in the right way.

I would be thankful for any help.

[flywlyx]

So, this is what I have

Vector3 srfVelocity = vessel.GetSrfVelocity();

Vector3 Airspeed = part.transform.InverseTransformDirection(srfVelocity);

double rho = FlightGlobals.getAtmDensity(FlightGlobals.getStaticPressure(transform.position)); ;

{

if (Airspeed.x >= 0)

part.rigidbody.AddForce((float)rho * Airspeed.x * yaws, 0, 0);

else

part.rigidbody.AddForce((float)rho * -Airspeed.x * yaws, 0, 0);

}

These one could add force to slow down the aircraft but not depends on the deviation angle(velocity) between aircraft direction and surface velocity, the force is depends on the deviation angle(velocity) between surface direction (which is 90°) and surface velocity.

I would be thankful for any help.

Edited February 18, 2014 by flywlyx